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Be it knownthat I, FBEDEREGK A. SIToHLM'sNNgrof Brooklyn, in the county of Kings, an d- State of .New l York, have invented, made, and 'applied to nse,`a certain4 new and useful Improvement in Syringes; and I do hereby declare the following to be affnllT clear, and exact description of the said invention, reference being'had to the annexed drawing', making part ofv this speoiiication,wherein-- Figure'l is a vertical section oi'- said syringe, and f Figure 2 is an exterior elevation of the same:

Like letters denote'the same parte.

In syringes it is usual for the nozzle to be at theend of the'cylindrieal case, and the piston-rod to extend through the other` end. Leakage often occurs between the piston and cylinder, and the accumulation of liquidy behind the piston is a great annoyance rto the person nsingthe same, either by running back when the syringe is inverted for use, or else jetting out around y the handle while the syringe is being filled. -Besidee this, the

cup-leather-packing having to he forced into the cylinder becomes damaged, and thereby loses its proper shape,v and leaks. i

AThe nature 4oi my'said invention consists in a syringe in which the materialis ejectedjthrough the pis-toi.

r'od,l and the cylinder is providedv with a screw-head at the opposite end to where the piston-rod paseos out.

`By this construction the syringe can be filled by drawing the cylinder along overtime `piston and rod, or by unqcrewing the oapiand illling in the substance tb beejectedl This enables me touintrodnce semi-fluid Asubstances, anchas ointments, into the syringe. v

In thedraiving, a is'the cylinder of the syringe; b, the closed screw-head c, the headthrough which'p'asses .the hollow rodV d of the pistone; iis thocup-lea'ther packing to said piston, andfis the nozzleend,"andg is a neck that can be grasped between the lingers, `while the' thumb ia applied against the head b to yeject the contents ol' the syringe through the rod d to the nozzlcf. 'h is e. ringnronnd the rod ,'that is movable and lfzlannpegl by ascrew. This can be adjusted to stop the action of the syringe 'at any desired point, and thereby regulate the amount ejected; y It is never necessary -to remove the head (c, becansewhenthe' head bis taken oli',- the pistone canbe pushed through suilciently for cleansing the parts, and for opening the packing-cup if necessary, and this packing will not beinjnred in being drnwn into-the'cylinder, because the edge ofthe packing passes in tho-lush A What I claim, and desire to-secnre by Letters Patent, is-

set forth. v y v i In witness whereof', I have hereunto set :ny signature, this vseventeenth day of July, A. D. 1867.

` l FREDK A. STOHLMANN.

Witnesses:

Ones. H. SMITH, Gno. D. WALKER.

A Vsyringe with, hollow piston-rod, al; piston e, screw-header 'cap and necky, :is und for the purposes 

